For the production of $X$-rays, the target should be made of

Characteristic $X$-rays are not obtained in the spectrum of a hydrogen atom because,

The intensity of $X$-rays from a Coolidge tube is plotted against wavelength as shown in the figure. The minimum wavelength found is ${\lambda _c}$ and the wavelength of the ${K_\alpha }$ line is ${\lambda _k}$. As the accelerating voltage is increased:

Find the $(a)$ maximum frequency,and $(b)$ minimum wavelength of $X$-rays produced by $30 \; kV$ electrons.

Molybdenum is used as a target element for the production of $X-$rays because it is

The wavelength of the $K_\alpha$ $X$-ray line for a given element is $0.32 \, \mathring{A}$. The wavelength of the $K_\beta$ line emitted by the same element will be ... $\mathring{A}$.